Question

The dimensions of a room are 8m 4m 2m how long an iron read can be placed

Answer 1

Step-by-step explanation:

The longest Iron rod that can be placed in a room will be equal to its diagonal.

$\therefore \: length \: of \: iron \: rod \\ = \sqrt{ {l}^{2} + {b}^{2} + {h}^{2} } \\ = \sqrt{ {8}^{2} + {4}^{2} + {2}^{2} } \\ = \sqrt{64 + 16 + 4} \\ = \sqrt{84} \\ = \sqrt{4 \times 21} \\ = 2 \sqrt{21} \: m \\ =2 \times 4.58 \\= 9.16\:m$

Answer 2

Answer:

2 root 21 is the answer

Step-by-step explanation:

hope it helps you